Similar to commit<124751d5e>, there should be a check for urb before kill it.
Signed-off-by: Defang Bo <bodefang@xxxxxxx>
---
sound/usb/mixer.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 81e987e..0223ef3 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -3589,8 +3589,10 @@ void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer)
/* stop any bus activity of a mixer */
static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer)
{
- usb_kill_urb(mixer->urb);
- usb_kill_urb(mixer->rc_urb);
+ if (mixer->urb)
+ usb_kill_urb(mixer->urb);
+ if (mixer->rc_urb)
+ usb_kill_urb(mixer->rc_urb);
}
static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer)
--
2.7.4
